Speed-governor.



W. F. DAWSON.

SPEED GOVERNOR. APfLlcAT'loN FILED sw'r. a. 1914.

Patented Jan. 30, 1917.

E Inventor? WiIIia/m F.' Dawson.

Witnessesz Y f -UNITEDLSTATES PATENT .omen

, f WILLIAM F. DAWSON, OF LYNN, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

Speclcation of Letters Patent.

srnnn('aovnmvonA Application med September 1914. Serial No. 860,011.y

p tatio'n at high speed, and nearly isochronous yin its action.

Milfora consideration of what I believe to novel and my invention, attention 1s d1- `hecte l to the accompanying specification and 'claims appended thereto.

.i In the accompanying di wing, Figure l.

"is ii.. side elevatlon, partly nin section of a. overnor embodying my invention; Fig. 2

s a topplan view; Eig. 3 1s a cross-section modification.

The spindle 1 may be either aixed to or made integral with a rotating shaft driven by the turbine or other machine whose speed is to be governed, or it can -be geared to said rotatin shaft. The spindle is flattened,

` prefera ly on only two sides at 2, to form cheeks to which are secured the base ends of laminated springs 3, preferably by means of a rivet 4 passing through the springs and lthe spindle. Eachfspring may be composed of one or more leaves and if more than one they are laid one upon another." Said leaves may be all of the same length Vor graduated as shown. In the case illustrated', the inner one- 5 is the longest and the V outer one 6 the shortest, and their-width also diminishes, because after being laid up they 10 o' in any ositioll to which it may be adjusted. Pivotal y attached to pins 11 at the free ends of the inner long leaves 5 ofthe springs are links 12 which form toggles whose joints are pivoted to .trunnions 13 on a collar 14.'

utilize the sprin y the connections yof speed required to The latter slides Vfreely on 'the spindle and has a groove 15 with which engages the fork 16 of a` lever 17 connected to the controller 4of the machine. When the spindle is rotated, the pins 11 and the ends of the links 12 pivoted to the leaves 5 act as centrifugal weights and tend to ily outward. This tendency is aided b the weightof the free ends of the spring, ut is yie dingly opposed by theelasticity of said springs. this arrangement 1t will be seen-that I o not 'exib Patented Jan. 30,1917.;

ploy any extra weights for my governor but themselves, together with links 12 to perform this function. This 1s of substantial advantage as it sim lilies the tween the springs and the n structure and -atthe same time ten to give i a more nearly isochronous action.

'If it is desired to change the stiffness-of the springs and consejuently the inclement. ex them, the sleeve 7. can be adjusted lengthwise u long the spindie. This governor. is articulerly`- servioe- -able on small industrial steam turbines,`

where it is frequently desirable to adjust the governor while running. Any suitable means may be used for this purpose, such,

for instance, as that shown in Fig. 4. Here the sleeve 18 made smooth internally so as to have a sliding fit over the springs, and externally it is connected with some manually operated adjusting means, such as an actuating lever 19, having a fork '2O en ging a groove 21 in the sleeve. A la 22.

and quadrant 23, or any other locking device may be used to hold the lever and eeve in any position to which they are moved,

and this movement can be eieoted without stxpping the turbine.

y n accordance with the provisions of the patent statutes, I have described the principle of'operation of my invention, together Jwith the apparatus which I now consider to represent the best embodiment thereof; but

.I desire to have it understood that the Vapparatus shown is only illustrative, and that the invention can be carried `out by other means.

What I claim as new Aand desire to securell `lv by Letters Patent of the United States, is 1. A centrifugal speed governor comprising a spindle, springs secured at one end to opposite sides, of said indle and extendin parallel to it, a con rolling device, en means connecting it to they free ende of the :sp1-ings, said springs nations beingr said `springs and the A centrifngal speed governor comprismg a spindle having flattened sides, lann- 15` i i. said sides t to and extending alongv the s and the connecting means acting as the weights for the gow ernor.

A centrifugal speed governor comprising a spindle, springssecnred at one end to lopposlte sides of said nated sp1-ings having their bases secured te and their free ends lying paijallel toand extending along the spindle, the laxnlgraduated in length with the longest ones lying next the spindle, links Upivoted to the fiee ends of said longest laminations, a controlling duevices and means connesting the links to it, said springs and the links acting as the weights for the governor.

4. A centrifugal-speed governor compris- `tinga spindle having flattened sides, laminated sp1-ings having their bases secured to sald sides and then` free ends lying parallel pindle, the laminations, a controlling device, means nations being graduated in length with the `longest ones lying next the spindle, links pivoted tothe free ends of said longest lemiconnecting the link to it, and means on the spindle :for adjusting the effective 'length of the sp1-ings.I

5. A centrifugal speed governor 'comprisn ing,r a cylindrical spindle flattened on. opposite sides, laminated springs secured to said sides and ln'ivingr their edges concentric with said spindle, and a Cylindrical sleeve sliding longitudinally on said, spindle and springs.

A centrifugal speed governor, compris a cylindrical spindle flattened on opposite sides, laminated springs secured to said sides and having their edges concentric with said spindle, a cylindrical sleeve sliding longitudinally on said spindle and springs, means for adjusting said sleeve, and means for locking it.

In Witness whereof I have hereunto set my hand this 31st day of August, 1914.

WILLIAM F. DAWSON.

`Witnesses A .HENRY FRENUH,

Jenn' A.. MCMANUS, Jr, 

